{"product_id":"hydrofoil-stabilizer-fits-outboard-motors-stern-drives-5-150-hp-replaces-seasierra-19hs-uanofcn-fo2001-davis-doel-fin-440","title":"Hydrofoil Stabilizer – Fits Outboard Motors \u0026 Stern Drives 5-150 HP (Replaces SeaSierra 19HS, Uanofcn FO2001, Davis Doel-Fin 440)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis universal \u003cstrong\u003eHydrofoil Stabilizer – Fits Outboard Motors \u0026amp; Stern Drives 5-150 HP (Dorsal Fin Style)\u003c\/strong\u003e is designed for 5-150 HP outboard motors and stern drives, and is suitable for most boats up to 200 HP. Its dorsal fin design enhances stability and performance on the water, reducing cavitation and porpoising for a smoother ride.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct cross-reference for SeaSierra 19HS, Uanofcn FO2001, and Davis Doel-Fin 440.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstalls via bolt-on method (drilling is required).\u003c\/li\u003e\n  \u003cli\u003eConstructed from durable, UV-resistant reinforced nylon plastic for marine environments.\u003c\/li\u003e\n  \u003cli\u003eIncludes a complete set of stainless steel mounting hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSeaSierra\u003c\/td\u003e\n        \u003ctd\u003e19HS\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eUanofcn\u003c\/td\u003e\n        \u003ctd\u003eFO2001\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDavis\u003c\/td\u003e\n        \u003ctd\u003eDoel-Fin 440\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel Type\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eApplication\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAll Brands\u003c\/td\u003e\n        \u003ctd\u003eOutboard Motors\u003c\/td\u003e\n        \u003ctd\u003e5–150 HP\u003c\/td\u003e\n        \u003ctd\u003eUniversal fit\u003c\/td\u003e\n        \u003ctd\u003eNot compatible with Volvo Penta 280\/290 outdrives and BMW Outdrives for engines over 50HP\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAll Brands\u003c\/td\u003e\n        \u003ctd\u003eStern Drives\u003c\/td\u003e\n        \u003ctd\u003e5–150 HP\u003c\/td\u003e\n        \u003ctd\u003eUniversal fit\u003c\/td\u003e\n        \u003ctd\u003eCompatible with Volvo Penta 270 outdrive\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAll Brands\u003c\/td\u003e\n        \u003ctd\u003eOutboards\/Outdrives\u003c\/td\u003e\n        \u003ctd\u003eUp to 200 HP\u003c\/td\u003e\n        \u003ctd\u003eUniversal fit\u003c\/td\u003e\n        \u003ctd\u003ePerformance may vary based on boat configuration\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eHydrofoil Stabilizer, Dorsal Fin Style\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eBolt-on (drilling required)\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eReinforced Nylon PA66 Plastic\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eH: 260 mm (10-1\/4 inches), W: 210 mm (8-1\/4 inches)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBolt-on with stainless steel hardware\u003c\/dd\u003e\n  \u003cdt\u003eCompatible HP Range\u003c\/dt\u003e\n\u003cdd\u003e5-150 HP (up to 200 HP)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eUV-Resistant, Marine-grade construction\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Hydrofoil Stabilizer (Dorsal Fin Style)\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e4 x Stainless Steel Mounting Hardware Set (bolts, nuts)\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e1 x Installation Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eThis hydrofoil stabilizer requires drilling four holes into the anti-cavitation plate of your lower unit. Measure carefully before drilling to ensure proper alignment. All necessary stainless steel mounting hardware is included for a secure installation.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this hydrofoil will fit my specific engine?\u003c\/summary\u003e\n  \u003cp\u003eThis hydrofoil offers a universal fit for most outboard and stern drive engines from 5-150 HP. However, it is not compatible with Volvo Penta 280\/290 series and BMW outdrives on engines over 50 HP. Always measure your anti-cavitation plate and compare it with the product dimensions before purchasing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the main benefits of the dorsal fin style?\u003c\/summary\u003e\n  \u003cp\u003eThe dorsal fin provides additional stability and improved tracking, especially in turns. It helps reduce porpoising and cavitation, leading to a smoother ride, faster planing, and potentially better fuel economy.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs drilling into the anti-cavitation plate safe for my engine?\u003c\/summary\u003e\n  \u003cp\u003eYes, when performed correctly, it is a standard and safe procedure. The anti-cavitation plate is robust enough for this modification. Follow the included installation guide carefully to ensure you drill in the recommended locations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat tools are needed for installation?\u003c\/summary\u003e\n  \u003cp\u003eYou will need a power drill, appropriate drill bits for metal, a wrench or socket set to tighten the mounting hardware, and a measuring tape to ensure correct placement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow can I tell if the hydrofoil is working correctly?\u003c\/summary\u003e\n  \u003cp\u003eAfter installation, you should notice your boat gets on plane at lower speeds, experiences less bow rise, and maintains better stability at various speeds. Handling during turns should also feel more controlled.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan this hydrofoil be painted to match my engine?\u003c\/summary\u003e\n  \u003cp\u003eYes, the reinforced nylon material can be painted. For a durable finish, lightly sand the surface, apply a plastic adhesion promoter, and use a quality marine-grade paint.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718241653051,"sku":"VG-ZO1F-9IYW","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/VG-ZO1F-9IYW.png?v=1762958065","url":"https:\/\/seasierra.com\/products\/hydrofoil-stabilizer-fits-outboard-motors-stern-drives-5-150-hp-replaces-seasierra-19hs-uanofcn-fo2001-davis-doel-fin-440","provider":"SeaSierra","version":"1.0","type":"link"}